46RH overdrive ratio.

I obviously haven't explained very well. What i'm questioning is whether the gear ratio of the overdrive disregarding lockup should be 0.69:1 or whether the stated figure includes lockup.
lockup has nothing to do with gear ratio

A torque converter slips so they designed lockup to stop slip while cruising

tires are part of gear ratio 0.01 difference = 26.7" vs 27"